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Patent US2502729A successfully refreshed from Google Patents.
US2502729A
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US
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Rectifying installation
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-05-04
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Granted: 1950-04-04
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Expires: 1966-05-04
Abstract
No abstract record available.
Inventors
- 👤 Klinkhamer Hendrik Abr Wijnand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; H; H02; H02J; H02J7/00; H02J7/34; Y; Y10; Y10S; Y10S320/00; Y10S320/14; Y10S320/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19848E
Cited
US921893A
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US1366629A
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US1837738A
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US1882473A
Cited
US2067420A
Cited
US2272745A
Cited
US2300296A
Cited
US2431312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |